20656974

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{8543}}^1$

素因数の和:8592

約数の個数: 32

約数和(自身を含む): 45932544

約数和(自身を除く): 25275570

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 62, 78, 93, 186, 403, 806, 1209, 2418, 8543, 17086, 25629, 51258, 111059, 222118, 264833, 333177, 529666, 666354, 794499, 1588998, 3442829, 6885658, 10328487, 20656974]

約数ペア:

[(1, 20656974), (2, 10328487), (3, 6885658), (6, 3442829), (13, 1588998), (26, 794499), (31, 666354), (39, 529666), (62, 333177), (78, 264833), (93, 222118), (186, 111059), (403, 51258), (806, 25629), (1209, 17086), (2418, 8543)]